Pump



E. N. TRUMP AND F. FRIEDRICHS.

PUMP- APPLICATION FILED JUNEZS. 1919.

Patented Feb. 8, 1921 Ijgl. 2a 31 0 .16 4 a 3 3.1

ii 13 Z5 Inventor UNITED STATES EDWARD N. TRUMP AND FRANK FREE -PATENT OFFICE.

CHS, 6i? SYRACUSE, NEW YORK, LASSIGNORS T0 HUMPHREY GAS lUMP CDBIPANY, A CORPORATION OF NEW YORK.

PUMP.

To all whom it may concern:

Be it known that we, EDWARD N. TnUMr, a citizen of the United States, residing in Syracuse, county of Onondaga, State of New York, and FRANK FRIEDRICHS, a subject of the King of Great Britain, residing in Syracuse, county of Onondaga, State of New York, have invented a new and useful 1m provement in Pumps, oi which the following is a specification.

The invention relates to pumps. T he object is to provide improvedmethod and means for reciprocating a tube provided with a suitable valve to force water through the same and for utilizing the inertia and momentum of the tube and its contents in connection with the functions of the power generating means.

The present invention comprises improvements in an internal combustion power cyl inder especially adapted to utilize the weight, inertia and momentum of said tube and contents in connection with compressing the charge and in scavenging burnt products. This application is a continuation in part of our application Serial. No. 95,062 filed May a, 1916.

Referring to the drawings, which illustrate merely by way of example, means for effecting said invention;

Figure 1 is a vertical section of a pump embodying the invention in which the power cylinder is adapted to use liquid fuel and the powerpiston operating therein is connected with and reciprocates the tube.

Fig. 2 is a similar view showing a differential piston conne ted with the power piston and operating in an air compressing and cushioning cylinder.

Similar numerals refer to similar parts in the different views.

Referring to Fig. 1, when the compressed charge below piston S in cylinder lis ignited, the piston is forced upwardly, ca r ing with it the tube 5 which is connected to the piston rod 6. Air is compressed in the cylinder above the piston and also in the annular space 7 which is in communication with the cylinder through ports 8. lVhen the piston passes above and uncovers the ports 8, and at the same time the tappet 9, on piston rod 6, encoun ers the stem 10 of valve 11. which opens this valve, the cor pressed air in annular space 7 rushes through ports 8 into cylinder 4 to drive out the burnt products through port controlled by valve Specification of Letters Patent.

Patented Feb. 8, 1921.

Application filed June 26, 1919. Serial No. 306,825.

11. During the upstroke ot' the piston 3 .1

tie spring 12 will actuate, through lever 13, the rod is of a plunger operating in cylinder 15, to raw in a charge of liquid fuel from a suitable source oi supply through pipe 16.

When the piston 3 covers the ports 8 an air cushion is compressed at the top of the cylinder until the upward movement of the piston is arrested. This compressed air cushion then reacts to accelerate the clownstroke.

Upon the downstroke of the piston 3, the projection 17 connected with the piston rod 6 will engage the tappet 18 on rod 19 to move the lever 13 and plunger rod 14 in the opposite direction to force a charge of liquid fuel through pipe 20 into cylinder 4 through a suitable spraying nozzle not shown. It will be understood that this liquid fuel is sprayed into the cylinder into air compressed by the downstroke of the piston, and thus we have a compressed charge for the next stroke.

Upon the upstroke of piston 3 and tube 5 the water, that has entered the bottom of the tube past the foot valve 21 to the level of the supply in well 22, is also carried upwardly, and when the piston comes to rest, due to the compression of the elastic cushion at the top of the cylinder 4, the water in the tube cannot stop so suddenly, and consequently flows by momentum upwardly drawing in more water past the foot valve 21.

The compressed elastic cushion in the top of the cylinder 4 will start the piston and tube downwardly at a velocity greater than that due to gravity, so that water will continue to rise in tube 5 and consequently more water will enter throughfoot valve 21.

By the downstroke of the piston 3 the fresh expansible 7 charge of gas in a gas cylinder, is compressed and the compressed elastic cushion thus formed, will check the downward movement of the piston toward the end of its stroke, and the water falling by gravity will gradually attain a velocity equal to the velocity of the tube, and if this is realized before the tube comes to rest the weight of the water in the desccndin will add to said compression of the I charge.

It can readily be seen that this additional compression will depend upon the relative velocities of the water and the tube, and it may be possible to operate the tube'at so high a velocity that the water would not come to rest at all, but that the tube would spect to Fig.1."

start on its second upward stroke before the water had entirely come to rest on its first V upward stroke. This, it can readily be understood, gives a wide range of cone itions in connected with a diilerentiai piston 26 operating in an enlarged cylinder extension 2?. This extension cylinder 27 is provided near the upper end with the intake port controlled by the nonreturn valve 29 and the discharge port 30 leading by pipe 31 to the port 32 delivering .to the upper end oi power cylinder 23. Approximately opposite the port 32- is the discharge port ln other respects the construction and {operaion are-similar tothat deszribed with re- Upon the upstroke or power stroke of: piston 25 the differential piston 26 coiroi'esses the air in the cylinder entension 27 and pipe 31 until piston 26 covers port 30 whereupon it cushions in the top of saidrylinder extension 27. As soon as the power pistonE IG uncovers the port 32 the compressed air in cylinder 2'? rusl into the pow cylinder 26 and scavenges it'by blowing the products of combustion out at exhaust port The reaction of the air cushion in the top of er;- tension 27 starts the parts on the downward stroke and alter the differential piston 26 uncovers the inlet port 28 air is d awn in through the check valve'29 ready for the next strokelVhere a gas cylinder is used with an exhaust valve, and that valve should leak badly, or should become stun-l; open or where for anyreason there might not lJEStU'EClHt compression in the cylinder properly to arrest the working parts at the endot 1 a; downstroke, it will be desirable to provide some form of dash pot for cusl'iioning the parts and preventing too great a sho k. is of course desirable that this dash pot should not be activeuntil the falling-piston is near the bottomof the cylinderor about the point of designed compression, in order that the dash pot'will not interfere with the compression. We have shown a simple to n of hydraulic dash pot in which the holes in the pipe 35 let the water flow freely in and out of the annular space 36 but when the holes are covered by the enlargement oil? tube 5 the water remaining in the annular space 36, being forced out through small orifices. or by the leakage between the tube and the surrounding pipe, makes an effective hydraulic dash pot..

' 'lVhat we (-laim is lfThe method of pumping which consists'in reciprocating a tube having a suitable foot valve. by means of a primary medium having high initial and subsequent expansive force utilizing the inertia of the ML delivered at moving parts to store energy and applying said stored energy to the removal of burnt products. 7

2. Apump comprising a tube provided with a suitable valve, meansior reciprocating the tube, comprising an internal combustion cylinder and a power piston operating therein, means connected with said power piston whereby air is compressed during the power stroke and, toward the end thereof, is delivered beneath the power piston to drive out burnt products.

3. A pump comprising a tube provided with a suitable valve, means for reciprocating the tubeQcomprising an internal combust-ion cylinder and a power piston operating therein, said cylinder provided with an exhaust port adapted to be opened near the end of the power stroke, means connected with said power piston whereby air is compressed during the power stroke and, to ward'the end thereof, is delivered beneath the power piston to drive'out burnt products. l

4. A pump comprising a tube provided with a suitable valve, means for reciprocating the tube, comprising an internal rombustion cylinder and a power piston operat ing therein, means connected with said power piston whereby air is compressed during the power stroke and,'toward the end thereof, is delivered eneath the power piston to drive'out burnt products and air is compressed in the top of the cylinder to cushion the end of the power stroke and cooperate in accelerating the return stroke.

5. A pump comprising a tube provided witha suitable valve, means for recipro ating the tube comprising an internal combustion cylinder a; i a power piston operatl therein, said der provided with an operating therei'i, inoperative relationship with power piston and m ans whereby air ised by the dif 'erei al piston the end of the power stroke to the cylinder b low the power piston to scav the c dcr of burnt products and "11' l in the end of the cylinder e1:-

tension serves to cushion the power stroke d cooperates in causing the EDlVARl)ll. TRUE ll F-Rillli FRIEDRICHS. 31

arged'ez-ltension and a diilerential piston return stroke. 

